Sjöberg, S. (2015). The Vanguard Messiah: Lettrism between Jewish mysticism and the Avant-Garde. de Gruyter.
Lua i Stíl Chicago (17ú heag.)Sjöberg, Sami. The Vanguard Messiah: Lettrism Between Jewish Mysticism and the Avant-Garde. Berlin [u.a.]: de Gruyter, 2015.
Lua MLA (8ú heag.)Sjöberg, Sami. The Vanguard Messiah: Lettrism Between Jewish Mysticism and the Avant-Garde. de Gruyter, 2015.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.